Brush



Aus. 31, 192.6.

E.. L. H. cosBY l598475- BRUSH fzvizov al; ff, 60,5% 1%772 i ma Patented ug. 31, 1926.

unire stares ERIC LEOPOLD HUGO COSBY, OIF TEDDINGTON, ENGLAND.

BRUSH.

Application filed April 11, 1925, Serial No. 22,450, and in Great Britain August 21, 1924.

rl"his invention relates to that class of brush in which the stock carrying the bristles detachably secured to the back so that, should the bristles become worn or ldamaged in any way, the old stock and bristles can be readily removed and a fresh stock and bristles substituted. The stock and bristles can be readily removed from the buck and washed or cleaned and dried and replaCQd in the back, thus avoiding any damage to the back through washing or cleaning, las is sometimes the case with brushes in which the stock is the back or the stock and bristles are permanently secured to the back.

In the means heretofore provided for tenipo 1arily locking the stock and bristles to the back in brushes of this character a portion of such means has usually been exposed outside the back or handle whereby, on the actuation of such means by the hand, the stock and bristles can be released from or affixed to the back, but such exposed portion has been a great drawback since ladies hair is likely to be caught in it when in use, and should such a brush fall on the projecting portion of the securing means the stem., or projecting portion is likely to be daniaged and is often broken or bentso as to be made useless.

lt has also been proposed to form an undercut portion in rim around the brush back at one end and a recess in the back or handle at the other end, the stock being provided with a nose piece to engage the undercut portion of the rim and with an extension or stem which is first inserted in the handle to compress a spring contained in the latter and then to bring the nose piece into engagement with the undercut portion, the spring pushing the stock into position and holding it there whilst the tubular portion of the handle around the stem locks the stock to the back.

A similar device has also been proposed wherein the stock has been provided with a sliding catch which, when the nose of the stock has engaged the undercut portion, can be. slid into a hole in the back to hold the stock to the back.

Now the object of this present invention is to provide a brush with two or more fastening devices, one member of each fastening` device being` secured to the stock and the other member of each fastening device which is spring controlled, or a spring, be-

ing secured to the brush back whereby, when the stock engages with the back and the stock is pressed to the back, the fastening devices will be engaged to hold the stock to the back, the spring controlled niember or members ensuring the locking. The disconnection of the stock and bristles from the back is by pulling on the bristles or aocomplished by levering the stock out of the back and the replacement of the stock and bristles in the back is effected by simpl pressing the stock into or on the back.

My invention will be `clearly understood from ,the following description aided bythe annexed drawings in which Figure l is a front view of av brush back having the bristled stock removed, and Fig ure`2 is a longitudinal section on the line 2-2ofl1`igure Referring now in detail vto the several figures, the stock, which is detachable from the back of the brush7 is preferably made from a perforated metal plate A, in the holes A of which the bristles B are held in the usual manner. The stock A is preferably backed up by a plate C, said parts being suitably secured together and the stock, constituted by the combined parts A, B and C, is positioned in the open face of the recess D formed in the back E.

The plate C is formed at its forward end with inclined lugs F extending from its rear surface, and at its rear end with a rearwardly inclined lip G, said lugs and lip being respectively outwardly divergent.v A plate l-l is secured in any suitable manner to the Hoor of the recess D, said plate being formed adjacent one end with a struck-up perforated wall 2, and at its other end with an inclined nose-piece l, also perforated.

A bolt S passes through the wall 2 and nose piece l, the forward end of said bolt being housed in a bore ll formed in the forward end o f the back E. The forwarc end of the bolt is threaded to receive a collar 4, the latter serving` as an adjustable abutment, between which and the wall 2 a spring 5 is confined. The spring, being under normal compression, presses the bolt in a forward direction. The rear end of the bolt is formed with a ring or loop 12 having a detent 3a the lower face of which is preferably inolined,vor cam-shaped. The lugs F and lip G are so positioned relatively to the bolt 3 that, when the lugs F are interengaged with the inclined forward wall of the nose piece I, the lip G rests against the inclined face of the detent 3a. Then when the bristle-stock is pressed toward the recess D the pressure of the lip G against lthe inclined :tace of the detent 3 further compresses the spring 5. drawing the bolt rearwardly so that the lip G slips over the forward end of the detent 3a, the bolt then being retracted under the expansion out the spring so as to bring the detent beneath the inclined lip G securely latching said lip in position and at the same time transmitting through the bristle-stock a retaining pressure between the lugs F and the nose piece I.

One ot the patentable features of the invention is that the lool/:ing means are entirely concealed when the bristle-stock is in place.

The invention is to be considered as unrestricted by the speciiic disclosure of the illustrative embodiment herein described eX- cept in so far as it may be subject to the specific limitations imposed by the express terms of' the appended claims.

What I do claim as my invention and desire to secure by Letters Patent is l. A brush including a back and a detachable bristle-stock, said back being formed with a recess normally closed by said bristle-stock, locking means concealed within said recess, by which means said bristle-stock is secured, said locking means including interlocking elements carried by said stock and said back, respectively, adjacent one of their ends, a spring actuated `ooit carried by said back Within said recess, and a lug carried by said bristle-stock lier latchably engaging said bolt in tensioned relation, thereby transmitting retaining pressure to said interlocking elements.

2. A brush including a back and a de tachable bristle-stock1 said back being provided with a recess normally closed by said bristle-stock, locking means concealed vwithii said recess by which means said bristle stock is secured, said locking means including interlocking elements carried by said stoel; and said back adjacent, respectively, oneof their ends, a spring actuated bolt Within said recess having a part thereof reciprocable within a bore in said recess, and a lug carried by said bristle-stock for latchably engaging said boit in tensioned reiation, thereby transmitting retainingl pressure to said interlockingelements.

In testimony whereof I have hereunto set my hand.

ERIC LEOPOLD HUGO COSBY. 

